Exhibit (h)(11)

                      FORM OF ACQUIRED FUND FEE WAIVER UNDERTAKING

                             ALLIANCEBERNSTEIN L.P.
                          1345 Avenue of the Americas
                            New York, New York 10105

                                                                     May 1, 2018

AB Variable Products Series Fund, Inc.
1345 Avenue of the Americas
New York, New York 10105

Dear Sirs:

      AllianceBernstein L.P. herewith confirms our agreement with you as
follows:

      1. You are an open-end management investment company registered under the
Investment Company Act of 1940, as amended (the "Act"). You engage in the
business of investing and reinvesting your assets in accordance with applicable
limitations. Pursuant to an Investment Advisory Agreement dated as of July 22,
1992, as amended as of May 1, 1997, May 1, 2001, May 1, 2003, May 1, 2004,
September 7, 2004, May 1, 2005, August 3, 2006, April 1, 2011, April 28, 2015,
February 3, 2017 and January 30, 2018 (the "Advisory Agreement"), you have
employed us to manage the investment and reinvestment of such assets with
respect to the AB Balanced Wealth Strategy Portfolio (the "Portfolio").

      2. We hereby agree that, notwithstanding any provision to the contrary
contained in the Advisory Agreement, we shall waive a portion of the fees
payable to us pursuant to the Advisory Agreement ("Advisory Fees") or reimburse
other expenses of the Portfolio as provided herein. We agree that, through April
30, 2019 (the "Limitation Expiration Date"), Advisory Fees shall be waived
and/or Portfolio expenses shall be reimbursed in an amount equal to the
investment advisory fees indirectly borne by the Portfolio of registered
investment companies or series thereof for which we serve as investment adviser
and in which the Portfolio invests.

      3. Nothing in this Undertaking shall be construed as preventing us from
contractually or voluntarily limiting, waiving or reimbursing other of your
expenses outside the contours of this Undertaking during any time period before
or after the Limitation Expiration Date; nor shall anything herein be construed
as requiring that we limit, waive or reimburse any of your expenses incurred
after the Limitation Expiration Date or, except as expressly set forth herein,
prior to the Limitation Expiration Date.

      4. This Undertaking shall become effective on the date hereof and remain
in effect until the Limitation Expiration Date.

      5. This Undertaking shall be construed in accordance with the laws of the
State of New York, provided, however, that nothing herein shall be construed as
being inconsistent with the Act.

      We understand and intend that you will rely on this Undertaking in
preparing and filing the Portfolio's Registration Statement with the Securities
and Exchange Commission and for other purposes and expressly permit you to do
so.

                                                   Very truly yours,

                                                   ALLIANCEBERNSTEIN L.P.

                                                   By:
                                                       -------------------------
                                                           Emilie D. Wrapp
                                                           Assistant Secretary